Cream together butter, pb, sugar and brown sugar.

Add egg, milk and vanilla to mixture and mix.

In a separate bowl whisk together dry ingredients then slowly mix into the wet ingredients.

Roll dough into 1 inch balls and roll in sugar. Then place 2 inches apart in baking sheet.

Place an unwrapped Hersey kiss in the center of each ball.

Bake at 375 degrees for 6-8 minutes.